:root{--bg: #f0f2f5;--panel: #ffffff;--panel-alt: #f7f8fa;--text: #111827;--text-dim: #6b7280;--primary: #1b74e4;--primary-weak: #e8f1fe;--border: #e5e7eb;--shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 2px 8px rgba(0, 0, 0, .06)}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}button{font:inherit;color:inherit;background:transparent;border:none;cursor:pointer}input{font:inherit;color:inherit}.app-root{height:100%;display:grid;place-items:center;padding:16px}.messenger-shell{height:calc(100vh - 32px);width:min(1800px,100%);background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);display:flex;overflow:hidden}.sidebar{display:flex;flex-direction:column;border-right:1px solid var(--border);background:var(--panel);width:min(360px,100%)}.sidebar-header{display:flex;align-items:center;gap:10px;padding:14px 16px}.profile-avatar{width:32px;height:32px;border-radius:999px;background:linear-gradient(135deg,#1b74e4,#8b5cf6)}.sidebar-title{flex:1;font-size:18px;font-weight:700}.header-actions{display:flex;gap:6px}.icon-button{width:32px;height:32px;border-radius:999px;display:grid;place-items:center;color:#374151;position:relative}.icon-button.show .drop-menu,.icon-button:hover .drop-menu{display:block}.icon-button .drop-menu{position:absolute;top:0;right:-100%;display:none;min-width:160px;z-index:1000;padding-top:40px}.icon-button .drop-menu .drop-menu-item{background:var(--panel);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);padding:8px 12px;font-size:14px;display:flex;align-items:center;gap:8px;cursor:pointer}.icon-button .drop-menu .drop-menu-item:hover,.icon-button:hover{background:var(--panel-alt)}.sidebar-search{padding:0 16px 12px}.search-input{display:flex;align-items:center;gap:8px;background:var(--panel-alt);border-radius:999px;padding:10px 12px;color:var(--text-dim)}.search-input input{border:none;outline:none;background:transparent;flex:1;min-width:0}.chat-list{list-style:none;margin:0;padding:8px;overflow:auto;flex:1}.chat-item{display:flex;gap:12px;padding:10px 8px;border-radius:10px;cursor:pointer}.chat-item:hover{background:var(--panel-alt)}.chat-item.active{background:var(--primary-weak)}.no-chats{color:var(--text-dim);font-size:14px;text-align:center;padding:16px}.avatar{width:44px;height:44px;border-radius:999px;background-position:center;background-size:cover;color:#fff;font-weight:700;position:relative}.avatar:after{content:"";position:absolute;bottom:0;right:0;width:12px;height:12px;border:2px solid var(--panel);border-radius:999px;background:#34c759;display:none}.avatar.online:after{display:block}.avatar.sm{width:32px;height:32px}.avatar.tiny{width:28px;height:28px}.avatar.lg{width:72px;height:72px}.avatar.lg:after{width:16px;height:16px;border-width:3px}.chat-meta{min-width:0;flex:1}.meta-top{display:flex;align-items:center;gap:8px}.name{font-weight:600}.time{margin-left:auto;color:var(--text-dim);font-size:12px}.meta-bottom{margin-top:5px;display:flex;align-items:center;gap:8px;color:var(--text-dim);font-size:12px;font-weight:300}.last{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{margin-left:auto;background:var(--primary);color:#fff;font-size:12px;font-weight:700;border-radius:999px;padding:2px 8px}.conversation{display:flex;flex-direction:column;background:var(--panel);position:relative;flex:1;overflow:hidden}.conversation-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border)}.conv-left{display:flex;align-items:center;gap:10px}.conv-list-menu{display:none}.conv-meta{display:flex;flex-direction:column}.conv-name{font-weight:700}.conv-status{font-size:12px;color:var(--text-dim)}.conv-actions{display:flex;align-items:center;gap:8px}.pill{border:1px solid var(--border);border-radius:999px;padding:6px 10px;font-weight:600;background:#fff}.pill:hover{background:var(--panel-alt)}.pill.wide{padding:8px 14px}.message-scroller{padding:16px;overflow:auto;background:#eef0f4;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;display:flex;flex-direction:column-reverse;flex:1}.quick-replies{display:flex;gap:8px;padding:8px 16px;border-top:1px solid var(--border);background:var(--panel);overflow-y:hidden;overflow-x:auto;width:100%}.quick-pill{white-space:nowrap;border:1px solid var(--border);background:var(--panel-alt);border-radius:999px;padding:6px 10px;font-weight:600;color:#374151;flex:0 0 auto;display:inline-flex;align-items:center;flex-shrink:1}.quick-pill:hover{background:#eaeef7}.bubble-row{display:flex;align-items:end;gap:8px;margin:8px 0}.bubble-row .spacer{width:28px;height:28px}.bubble{max-width:min(70%,680px);background:#fff;border:1px solid #e6e6e6;border-radius:18px;padding:10px 12px;box-shadow:var(--shadow)}.bubble p{margin:2px 0 2px 2px;line-height:1.4;font-size:14px}.bubble-time{color:var(--text-dim);font-size:10px;font-weight:300;display:none}.bubble-row.outgoing{grid-template-columns:auto 28px}.bubble-row.outgoing .bubble{margin-left:auto;background:#e7f3ff;border-color:#cfe7ff}.composer{border-top:1px solid var(--border);padding:10px 16px;background:var(--panel);position:relative}.custom-emoji{position:absolute;bottom:70px;right:30px}.composer-box{display:flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:999px;padding:6px 10px;background:var(--panel)}.composer-box input{border:none;outline:none;flex:1;min-width:0}.composer-actions{display:flex;align-items:center;gap:6px}.send-button{background:var(--primary);color:#fff;border-radius:999px;width:32px;height:32px;display:grid;place-items:center}.send-button:hover{opacity:.9}.details{display:none;flex-direction:column;border-left:1px solid var(--border);background:var(--panel);width:min(400px,100%)}.details.open{display:flex}.details-header{padding:12px 16px;border-bottom:1px solid var(--border);font-weight:700;display:flex;align-items:center;justify-content:space-between}.details-body{padding:12px 16px 16px;overflow:auto}.about-card{display:grid;place-items:center;gap:8px;padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--panel-alt)}.about-name{font-weight:700}.about-sub{color:var(--text-dim);font-size:13px}.section{margin-top:16px}.section-title{font-weight:700;font-size:13px;color:var(--text-dim);margin-bottom:8px}.media-grid{width:100%;display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.media-item img{width:100%;height:auto;background-position:center;background-size:contain;border-radius:8px}.media-item{cursor:pointer;overflow:hidden}.image-viewer-overlay{position:fixed;inset:0;background:#000000b3;display:flex;justify-content:center;align-items:center;z-index:9999}.image-viewer-img{width:auto;height:90%;object-fit:cover;border-radius:12px}.empty{border:1px dashed var(--border);border-radius:8px;padding:16px;text-align:center;color:var(--text-dim);font-size:13px}@media (max-width: 1100px){.messenger-shell{grid-template-columns:320px 1fr;position:static;inset:auto}.details{display:none}}@media (max-width: 780px){.messenger-shell{height:100vh;border-radius:0;position:fixed;inset:0}.conv-list-menu{display:grid}.sidebar{position:absolute;top:0;left:0;bottom:0;width:100%;z-index:10000;display:none}.sidebar.open{display:flex}.app-root{padding:0}.details{position:absolute;top:0;left:0;bottom:0;width:100%;z-index:10000}}